Good morning! So, I graduated in 2013 and got a job in industry. Now, I'm starting grad school in the fall. That's a 2.5 year gap; I'd like to brush up on my skills and shore up my weaknesses. Anyone have recommendations? In particular, for Math Methods and skills? As far as Undergraduate texts go, I have the usual University Physics/Calc, Griffiths EM/Quantum, Modern Physics, Diff Eq, and a few other misc books. Thanks!